نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد مهندسی منابع آب، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، ایران.

2 استادیار بخش مهندسی آب، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران. استادیار پژوهشکده فناوری تولیدات گیاهی، دانشگاه شهید باهنر کرمان، ایران

3 استادیار بخش مهندسی آب، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

چکیده

برای ارزیابی تآثیر کم­آبیاری بر عملکرد و اجزای آن در کشت مخلوط سورگوم-لوبیا قرمز، پژوهشی در سال 94-93 در قالب کرت­های یک­بار خردشده بر پایه بلوک­های کامل تصادفی با سه تکرار در مزرعه دانشگاه شهید باهنر اجرا شد. پنج سطح آبیاری (آبیاری کامل، کم­آبیاری سنتی و خشکی موضعی ریشه هرکدام با 75 و 60 درصد نیاز آبی) بر پنج نسبت کشت سورگوم - لوبیا قرمز (صد درصد سورگوم، 75، 50 و 25 درصد سورگوم و صد درصد لوبیا قرمز) اعمال شد. در نهایت ارتفاع، تعداد برگ، شاخص سطح برگ، وزن تر و خشک اندام هوایی، بهره­وری مصرف آب، نسبت برابری زمین و شاخص­های رقابتی گیاهان اندازه­گیری شد. نتایج نشان داد اعمال تنش آبی بر تمامی صفات تأثیر معنی­داری و خشکی موضعی ریشه، باعث افزایش 4/29 درصد بهره­وری آب در گیاه سورگوم و 2/12 درصد در گیاه لوبیا قرمز (در یک سطح تنش و نسبت کشت ثابت) در مقایسه با کم­آبیاری سنتی گردید.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Evaluating the effects of alternative and regulated deficit irrigation on yield and some components in intercropping (Sorghum – Red bean)

نویسندگان [English]

  • Atiehkh Khajeh Khezri 1
  • Abbas Rezaei Estakhroeih 2
  • sodabeh Golestani Kermani 3

1 MSC student, Department of Water Engineering, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman.

2 Assisstant Professor, Department of Water Engineering, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman. Assisstant professor, Research and Technology Institute of Plant Production (RTIPP), Shahid Bahonar University of Kerman, Kerman, Iran.

3 Assisstant professor, Department of water engineering, Faculty of agriculture, Shahid Bahonar University of Kerman, Kerman.

چکیده [English]

Irrigated agriculture is the main user of the available water resources. About 70% of the total water withdrawals and 60-80% of total consumptive water use are consumed in irrigation (Sepaskhah and Ahmadi, 2010). Due to changes in climatic parameters and reduction of available water resources, The application of water saving strategies such as deficit irrigation with choosing suitable cultivation system compatible with ecological characteristics of the area such as intercropping, can reduced water use consumption. Many researchers have studied the effects of these methods on some components of yield and water use efficiency (Anderian, 2004; Caviglia et al, 2004; Filho, 2000; Tahir et al, 2003). In recent years, the concept of alternate partial root-zone drying irrigation has been raised and attracted considerable interest. Partial root-zone drying technique (PRD) is a modified form of deficit irrigation which involves irrigation only one part of the root zone in each irrigation event, leaving another part to dry to certain soil water content before rewetting by shifting irrigation to the dry side (Sepaskhah and Ahmadi, 2010) that this technique has been less investigated in intercropping system. The objective of this study was to investigate the effects of regulated deficit irrigation (DI) and partial root-zone drying (PRD) on yield and some components of intercropping Sorghum- Red bean. 

کلیدواژه‌ها [English]

  • Deficit İrrigation
  • Intercropping
  • Partial root zone drying
  • Water use efficiency

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